Dynamo-electric machine and means for cooling same.



V E. u. PORTER. DYNAMO ELECTRIC MACHINE AND MEANS FOR COOLING SAME.

APPLICATION FILED OCT-22. l9l3. 1,145,612.

Patented July 6. 1915.

COLUMBIA PLANUURAPB c0.,wASH|Na'roN, n. c.

" 'Enwrnn. oning, or rmnannnrnm.rn vsYLvANIA, 1

To all whomjimmy concern: Be itfkfowlnthat LBEDi IN HQPORTER, citizen of the Unitedstates', residing at the cityfiof Philadelphia, in the county of'Phil adelphia faiid S tatei of'liennsylvania, have invented certain new} and useful Improvements in iDyna-mo iElectric Machinesand l\Ieans for Cooling Same, of which the fol.-

lowing is a specification. i Myin,vention relates to electric generators -generators I'o f the" revolving field type'and late y current' windinga in 'thefcoreand through spaces between the a core and windings are used in the art! I My inventionconsists in' forminga wind ingof seamless drawn copper tubing j throughthe magnetic cores of the generator,

and; circulating a cooling medium of high 7 I specific heatjand -densitygsuch,as oil water I .or mercury, through such winding through Q'the interior of the conductor by means of suitable pressure, thus withdrawingland-rad v the application-of same what I claim as new and'original, and Wish to protect by Letters diating the heatfex'tern al tothe machine itself. I i ,1 l I am aware that in stationary transform- .ers of large size carrying-currents of high amperages -in" their secondary coils, these coilsfhave. been constructed of a flattened copp'ertube oflarge' bore andcross section and 'watercirculatedthrough same forcool-f ing same so I claim nothingnew as to cooling; zit-conductor by forcing'wvater through it; i

Recent developments in the size of ,high

j spec turbine generators and" rotary transv formers make :it conunerciallyfdesirable to provide some means for" removing the heat eans for cooling the coils" in; where very small wlres are t y {are constructed as ngsfl is an end eletric machinehaving coils embodying 'myinvention 5' F' g; 2, is an enlarged sectional *VlQW.

' andmor'e {particularly-to alternating current ransformers having an alternating 'lhe objek'ztv of my inventionis thejcooling 7 center of the'convolutions will be fromthe interior 'offthefcoils. My invention vatio n, partly ingsectlo a dynamo elec showing a I combination of "solid and hollow .DYITAIVIO-ELEQIlilC MACHINE ANDMEANS FOR cooLInGsnME. I

. sneae aa f L rs. at t dJ y J aaaammgmaaaa;;1913,;;, sefiaNo. 796,727. i v l i I wires assembled in a slot of a machine according to my invention; and'Eig. 3, is a cross-sectlon of a compoundconductor or cable built up of a plurality of solidconducelectric machine G in" which the coils or 1, .aconventional illustration of a dynamo f which may be connected in any suitable manner with'a source of cooling liquid havmg means for clrculatmg the liquid therethrough. I have shown the hollow conductors of the rotor terminating in hollow leads C, whichjmay extend inalinement with the j .rotor axis and connect in any suitablemannet with the supply and exhaust pipes of the liquid supply.

y I believe I am the of, symmetrically formed coils. As previously stated, the coils may be constructed d I first to provide a means 1 for abstracting the heat from theinterior upon F formers in the usual manner. The.

advantage of cooling the coil-structure at the interior and abstracting the heat at the especially appreciated by engineers.

Having duly described my invention and Patent of theiUnited States is set forth in the following 1. A winding for electrical devices, comprising a coil having the conductorsv sym-" metrically arranged, the conductor at the in-' interior of the coil. V 2. A dynamo electr1c machine, comprising ply, whereby a cooling fluid may be circulated therethrough to abstract heat from the rotor and stator members provided with windings consisting of coils having hollow I conductors at the interior thereof adapted, (to be connected to a fluid supply,'the conductors of the coils being symmetrically arranged with respect to the I hollow conduc- "tor, whereby a cooling fluid may be circulated. through the interior of the coil to ab-. stra'ct theQheat' therefrom.

,3. In; windings for electrical devices, a

ice

I of said group beinghollew a nd adapted to be connected to @"flfiid -s,1'1pp"ly, whereby '3 Witnss:

plurality 6f cohdfiQfo'rS iifi'ahgedfinmgicyfip, Q"In.testimoliy whefeef Iafiix m sigrfmture" at least one of the conductors in the interior in presence of two witnesses; I

E I TH. PORTER. L

o i iid ley b ;cir ml edit rethr gh ,qqBaB- 3 13mm to ab stract heat from Said conductors; 1 "ED NA HICKS. '1

Games 6: this mm may 'be obtainedfor me can't; eah, Byedd ressing thebomn 1 issio nif of Patents;

- 9 "Washiimmn c-P i m 

